# Does Thor have tensor memory?

**URL:** <https://forums.developer.nvidia.com/t/does-thor-have-tensor-memory/358073>\
**Category:** Jetson Thor\
**Created:** [January 20, 2026, 6:25am UTC](https://forums.developer.nvidia.com/t/does-thor-have-tensor-memory/358073 "2026-01-20T06:25:45Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![shim27511](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@shim27511](https://forums.developer.nvidia.com/u/shim27511)\
**Post date:** [January 20, 2026, 6:25am UTC](https://forums.developer.nvidia.com/t/does-thor-have-tensor-memory/358073/1 "2026-01-20T06:25:45Z")

</div>

I’m looking into the specifications for Thor, but I couldn’t find clear information regarding its tensor memory which is dedicated on-chip memory for use by Tensor Cores.

Does it only use smem for 5th tensor core? Any clarification or reference to the docs would be appreciated.

---

<div class="post-metadata">

**Author:** ![ChrisB\_NV](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/chrisb_nv/32/382649_2.png) [@ChrisB\_NV](https://forums.developer.nvidia.com/u/ChrisB_NV)\
**Post date:** [January 21, 2026, 4:30am UTC](https://forums.developer.nvidia.com/t/does-thor-have-tensor-memory/358073/3 "2026-01-21T04:30:59Z")

</div>

Can you please add more background to your question? Like do you mean on-SoC SRAM or the DRAM? And what is the objective for the question?

---

<div class="post-metadata">

**Author:** ![shim27511](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@shim27511](https://forums.developer.nvidia.com/u/shim27511)\
**Post date:** [January 22, 2026, 5:14am UTC](https://forums.developer.nvidia.com/t/does-thor-have-tensor-memory/358073/4 "2026-01-22T05:14:35Z")

</div>

[https://docs.nvidia.com/cuda/parallel-thread-execution/index.html?highlight=tcgen05%2520mma#tensor-memory-addressing](https://docs.nvidia.com/cuda/parallel-thread-execution/index.html?highlight=tensor%2520memory#tcgen05-mma)

According to the post, 5th generation Tensor Cores utilize Tensor Memory for computations. I asked because Jetson Thor also features these cores.

- the `A` matrix has shape _MxK_, in either Tensor Memory or Shared Memory

- the `B` matrix has shape _KxN_, in Shared Memory of the current CTA and optionally in peer CTA

- the `D` matrix is of the shape _MxN_, in Tensor Memory